Experience the power that effective illumination can provide from the brand known for quality. Introducing Crimson Trace Tactical Lights, a best-in-class family of tactical lighting products for rail-adapted long guns, backed by the Crimson Trace reputation you trust. The CWL-102 is a powerful rail-attached Cree XPL LED tactical light for M1913 Pica tinny, Weaver, Key Mod & MLOK rail-equipped long guns which provides up to 500 Lumens of bright white light..